Zoning Commission pauses plan to expand matter-of-right rear additions after sharp community opposition

The Zoning Commission heard public testimony and extensive commissioner questioning Oct. 27 on a proposed text amendment (case no. 25-11) that would raise the matter-of-right rear addition depth on attached and semi-detached dwellings from 10 feet to 16 feet on the ground floor and allow up to 12 feet on upper floors.

Jennifer Steingasser of the District—s Office of Planning said the change aimed to reduce regulatory barriers and accommodate universal-design and aging-in-place needs. "The proposal is set down and advertised proposed to increase rear additions on the back of row houses and semi detached dwellings from 10 feet, which is currently allowed as a matter of right to 16 feet as a new matter of right," Steingasser told the commission, adding that additions beyond the new thresholds would still require a special exception and that "rear yard, lot occupancy, building height, and other development standards would still apply."

The Office of Planning also described outreach that included four virtual open houses and meetings with Advisory Neighborhood Commissions (ANCs). As an alternate to a straight 16-foot allowance on all floors, OP proposed the ground floor at 16 feet and the second and third floors limited to 12 feet as a matter of right.

That compromise did not satisfy several neighborhood representatives. "This text amendment is a solution in search of a nonexistent problem, and we emphatically urge the zoning commission to reject it," said Mark Ekawala, vice chair of ANC 6C, which filed a 7-0 vote opposing the amendment. Ekawala and other ANC witnesses told the commission the existing 10-foot baseline plus the Board of Zoning Adjustment—s (BZA) special-exception review strikes an appropriate balance and preserves the individualized analysis of impacts like sunlight, privacy and unusual lot configurations.

Gwendolyn Lowes, chair of ANC 2E, said ANC 2E, a federal historic district, also opposed the change and recommended keeping the current process. Several residents described concrete impacts they said would follow a matter-of-right expansion: blocked rear yards, taller continuous rear walls on property lines, roof decks and stair towers that would increase overlooking and reduce light and air.

Neighborhood planner and long-time community advocate Alan Gambrell provided a quantitative example: on a typical 60-foot rear yard, moving the pushback from 10 to 16 feet increases the portion of the yard obstructed from 25% to 40%, a change he said would be material for many properties.

The Washington chapter of the American Institute of Architects (AIA) offered a contrary perspective in support of the original OP proposal, arguing that allowing greater rear depth can improve interior layouts and discourage filling of light wells. An AIA representative also noted discretionary review can add months to projects and that design flexibility helps homeowners modernize row houses.

Commissioners pressed witnesses and OP on several technical points: whether building- and housing-code standards already address dimensions for accessible bedrooms, how frequently BZA sees cases that are only rear-addition requests, how lot widths affect room sizes, and whether a 16-foot allowance would simply shift the baseline and encourage larger future additions. Commissioner Wright proposed exploring a narrower increase or coupling an increased matter-of-right depth with requirements such as a light well or a demonstrated accessibility requirement.

After hearing testimony and discussing alternatives, commissioners expressed reservations about the proposal as drafted. Jennifer Steingasser said OP would withdraw the case for further work and public engagement; Chair Anthony Hood confirmed the commission would accept that voluntary withdrawal and closed the hearing. No formal vote on the text amendment was taken.

Discussion points not resolved at the hearing included whether any matter-of-right increase should be limited to certain zones, whether it should be conditioned on design elements such as light wells, and whether increased depth should be tied to demonstrable accessibility or affordable-unit requirements. OP said it would continue engagement with OZLD (Office of Zoning Legal Division), the Department of Buildings and affected ANCs before returning with revised language.

The commission left the record open only to accept the voluntary withdrawal filing by OP and indicated the amendment could return in a revised form at a later date.